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  2. List of energy abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_energy_abbreviations

    IECC—International Energy Conservation Code; K-value—thermal conductance; Low-e—low emissivity; LEED—Leadership in Energy and Environmental Design, standard for Green Building design; MEF—modified energy factor (clothes washers) MINHERS—Mortgage Industry National Home Energy Rating Systems Standards

  3. Conservation of energy - Wikipedia

    en.wikipedia.org/wiki/Conservation_of_energy

    This is an accepted version of this page This is the latest accepted revision, reviewed on 4 December 2024. Law of physics and chemistry This article is about the law of conservation of energy in physics. For sustainable energy resources, see Energy conservation. Part of a series on Continuum mechanics J = − D d φ d x {\displaystyle J=-D{\frac {d\varphi }{dx}}} Fick's laws of diffusion Laws ...

  4. Thermodynamic equations - Wikipedia

    en.wikipedia.org/wiki/Thermodynamic_equations

    The truth of this statement for volume is trivial, for particles one might say that the total particle number of each atomic element is conserved. In the case of energy, the statement of the conservation of energy is known as the first law of thermodynamics. A thermodynamic system is in equilibrium when it is no longer changing in time.

  5. Mechanical energy - Wikipedia

    en.wikipedia.org/wiki/Mechanical_energy

    The principle of conservation of mechanical energy states that if an isolated system is subject only to conservative forces, then the mechanical energy is constant. If an object moves in the opposite direction of a conservative net force, the potential energy will increase; and if the speed (not the velocity ) of the object changes, the kinetic ...

  6. First law of thermodynamics - Wikipedia

    en.wikipedia.org/wiki/First_law_of_thermodynamics

    That axiom stated that the internal energy of a phase in equilibrium is a function of state, that the sum of the internal energies of the phases is the total internal energy of the system, and that the value of the total internal energy of the system is changed by the amount of work done adiabatically on it, considering work as a form of energy.

  7. 2000-watt society - Wikipedia

    en.wikipedia.org/wiki/2000-watt_society

    The Swiss Federal Office of Energy (FOE) highlights a decrease in per capita energy use from 6,000 to just under 4,000 watts and a nearly 50% cut in greenhouse gas emissions. However, to meet the 2,000-watt society goals by 2050 to 2100, the FOE acknowledges the necessity for more decisive measures, noting the progress is on the right path but ...

  8. Outline of energy - Wikipedia

    en.wikipedia.org/wiki/Outline_of_energy

    Primary energy, energy contained in raw fuels and any other forms of energy received by a system as input to the system. Radiant energy, energy that is transported by waves; Rotational energy, part of an object's total kinetic energy due to its rotation; Solar radiation, radiant energy emitted by the sun, particularly electromagnetic energy

  9. Energy conservation - Wikipedia

    en.wikipedia.org/wiki/Energy_conservation

    An energy audit is an inspection and analysis of energy use and flows for energy conservation in a structure, process, or system intending to reduce energy input without negatively affecting output. Energy audits can determine specific opportunities for energy conservation and efficiency measures as well as determine cost-effective strategies ...

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